210145562447 has 2 divisors, whose sum is σ = 210145562448. Its totient is φ = 210145562446.

The previous prime is 210145562411. The next prime is 210145562519. The reversal of 210145562447 is 744265541012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210145562447 - 2²⁰ = 210144513871 is a prime.

It is a super-2 number, since 2×210145562447² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210145562147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105072781223 + 105072781224.

It is an arithmetic number, because the mean of its divisors is an integer number (105072781224).

Almost surely, 2^210145562447 is an apocalyptic number.

210145562447 is a deficient number, since it is larger than the sum of its proper divisors (1).

210145562447 is an equidigital number, since it uses as much as digits as its factorization.

210145562447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 268800, while the sum is 41.

The spelling of 210145562447 in words is "two hundred ten billion, one hundred forty-five million, five hundred sixty-two thousand, four hundred forty-seven".